The basic difference between PEMFC and SOFC

PEMFC hydrogen is the fuel, which requires high purity. The electrolyte is a high-molecular polymer, usually a proton conductor. Catalyst platinum carbon, gas diffusion layer carbon. Bipolar plates have carbon and metal. The working temperature is low. The electrode reaction zone involves a three-phase reaction, which is more complicated. Consider water management issues.

SOFC can use hydrocarbons as fuel. The electrolyte is ceramic, which can conduct oxygen ions and can conduct protons. The anode part of the catalyst can be nickel, and the electrode is also ceramic oxide. The bipolar plate is also dominated by ceramic oxide. The working temperature is high. The electrode reaction zone is dominated by two phases. No water management is required. The preheating quality is high.